Marine seismic streamer with depth sensor calibrating means

Details Marine seismic streamer with depth sensor calibrating means Marine seismic streamer with depth sensor calibrating means

1977-03-01

1979-01-16

Moskowitz, Nelson

Communications: electrical

Selective

Having indication or alarm

114245, 73 4R, G01V 138, B63B 2156

Patent

active

041351410

ABSTRACT:
A marine seismic streamer section for a towed underwater streamer containing a buoyancy regulating fill liquid and the usual hydrophones, strain cables, signal wires and the like housed in a generally cylindrical tubular jacket sealed at its ends against loss of fill liquid and containing a depth sensor for producing electrical signals indicative of the depth of the streamer. The sensor is in a rigid housing whose interior is connected by a tube to a valved calibrating chamber having a valve member normally communicating the interior of the depth sensor housing to the fill liquid pressure conditions in the jacket. The chamber has an external access port normally closed by a plug, and the valve member is movable by a probe inserted through the port when the plug is removed and a source of gauged pressure connected to the access port to subject the interior of the depth sensor housing to the gauged pressure source.

REFERENCES:
patent: 2465696 (1949-03-01), Paslay
patent: 2871665 (1959-02-01), Brandt
patent: 3049148 (1962-08-01), Richardson
patent: 3280834 (1966-10-01), Zahuranec
patent: 3371739 (1968-03-01), Pearson
patent: 3557602 (1971-01-01), Frantz
patent: 3680520 (1972-08-01), Smith
patent: 3794965 (1974-02-01), Charske

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